Definition of Lactotropic Hormones

Lactotropic hormones are a group of hormones that regulate milk production (lactation) in mammalian mammary glands.

Overview

These hormones, also known as prolactin or luteotropic hormones, are typically secreted by the anterior pituitary gland in response to various stimuli such as suckling, pregnancy, and certain medications.

Functions

1. Stimulation of Milk Production: Lactotropic hormones play a crucial role in stimulating the synthesis and secretion of milk in lactating mammary glands.

2. Development of Mammary Glands: They aid in the development of mammary glands during pregnancy, preparing them for milk production.

3. Regulation of Milk Ejection: Lactotropic hormones assist in regulating the release of milk from the mammary glands by facilitating milk ejection.

Mechanism of Action

Lactotropic hormones exert their effects by binding to specific receptors located on the surface of mammary gland cells. This binding triggers a cascade of intracellular events, leading to milk production and secretion.

Regulation

Lactotropic hormone secretion is under complex regulation involving various factors such as the hypothalamus, feedback mechanisms, neurotransmitters, and other hormonal influences.

Note: Lactotropic hormones should not be confused with lactogenic hormones, which are hormones involved in promoting milk synthesis.